Word Searches work at almost every level as one way to introduce vocabulary. Crossword Puzzles work to reinforce vocabulary. Word Quizzes are another variation.
Attached, for your entertainment is Medical Laboratory Quality Word Search. Print it out and enjoy. It may take a little while to complete. One way to prevent against boredom sneaking in is to set a time limit (10 minutes) and see how many words can be found.
This was created using a free-on-line teacher resource at http://tools.atozteacherstuff.com/word-search-maker